Thank you for your inquiry. Of the 3 models listed, only item 26016 has a zero stop.
The correct height rings will depend on a couple factors and the guide at the first link below will help you determine proper ring height for your scope and rifle. However, if you are wanting to using the Talley Rings that directly mount to the receiver I recommend using the high Talley Weatherby Rifle Scope Mount. The Talley Weatherby Rifle Scope Mounts at the link below will work.
https://www.opticsplanet.com/howto/how-to-how-to-measure-scope-height-scope-ring-height.html
https://www.opticsplanet.com/talley-weatherby-riflescope-mount.html?_iv_gun-model=weatherby-vanguard&_iv_tube-diameter=30-mm&_iv_ring-height=high
The eye relief of the Sightron S-TAC 4-20x50mm Riflescope is 3.7-3.9 inches.
Please contact our customer service found here:
+1-800-504-5897
Email: sales@opticsplanet.com
Thank you for your inquiry. Lens covers are provided with this product.
Yes, MPN: 26016 is FFP and is a MIL reticle with MIL adjustments on the turrets.
https://www.opticsplanet.com/v/s-tac4-20x50zsffpirmh-sightron-riflescope-sightron-s-tac.html
Please email us at techsales@opticsplanet.com so we can further answer your question.
These do not, but if you need assistance in finding the correct rings, you can email us at techsales@opticsplanet.com.
They do not. The only model that has a zero stop is MPN: 26016.
MPN: 26016 is the only model on this page that has exposed turrets. The MPN: 26014 and MPN: 26015 have capped target style turrets.